thodg/libgit2/azure-pipelines/getcontainer.sh

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• Hash : 47fb33ba
  Author :
  Date : 2020-06-07T00:39:27
  

  Introduce CI with GitHub Actions
  
  Add CI using GitHub Actions and GitHub Packages:
  
  * This moves our Linux build containers into GitHub Packages; we will
    identify the most recent commit that updated the docker descriptions,
    and then look for a docker image in libgit2's GitHub Packages registry
    for a container with the tag corresponding to that description.  If
    there is not one, we will build the container and then push it to
    GitHub Packages.
  
  * We no longer need to manage authentication with our own credentials or
    PAT tokens.  GitHub Actions provides a GITHUB_TOKEN that can publish
    artifacts, packages and commits to our repository within a workflow
    run.
  
  * We will use a matrix to build our various CI steps.  This allows us
    to keep configuration in a single place without multiple YAML files.
  

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• azure-pipelines/getcontainer.sh

• #!/bin/bash
  
  set -e
  
  DOCKERFILE_PATH=$1
  
  if [ "${DOCKERFILE_PATH}" = "" ]; then
  	echo "usage: $0 dockerfile"
  	exit 1
  fi
  
  if [ "${DOCKER_REGISTRY}" = "" ]; then
  	echo "DOCKER_REGISTRY environment variable is unset."
  	echo "Not running inside GitHub Actions or misconfigured?"
  	exit 1
  fi
  
  DOCKER_CONTAINER="${GITHUB_REPOSITORY}/$(basename ${DOCKERFILE_PATH})"
  DOCKER_REGISTRY_CONTAINER="${DOCKER_REGISTRY}/${DOCKER_CONTAINER}"
  
  echo "::set-env name=docker-container::${DOCKER_CONTAINER}"
  echo "::set-env name=docker-registry-container::${DOCKER_REGISTRY_CONTAINER}"
  
  # Identify the last git commit that touched the Dockerfiles
  # Use this as a hash to identify the resulting docker containers
  DOCKER_SHA=$(git log -1 --pretty=format:"%h" -- "${DOCKERFILE_PATH}")
  echo "::set-env name=docker-sha::${DOCKER_SHA}"
  
  DOCKER_REGISTRY_CONTAINER_SHA="${DOCKER_REGISTRY_CONTAINER}:${DOCKER_SHA}"
  
  echo "::set-env name=docker-registry-container-sha::${DOCKER_REGISTRY_CONTAINER_SHA}"
  echo "::set-env name=docker-registry-container-latest::${DOCKER_REGISTRY_CONTAINER}:latest"
  
  exists="true"
  docker login https://${DOCKER_REGISTRY} -u ${GITHUB_ACTOR} -p ${GITHUB_TOKEN} || exists="false"
  
  if [ "${exists}" != "false" ]; then
  	docker pull ${DOCKER_REGISTRY_CONTAINER_SHA} || exists="false"
  fi
  
  if [ "${exists}" = "true" ]; then
  	echo "::set-env name=docker-container-exists::true"
  else
  	echo "::set-env name=docker-container-exists::false"
  fi
  

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